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HDMI Cable Laptop to TV giving 'NO SIGNAL' message?

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April 19, 2013 12:12:55 PM

Brand new hdmi cable connecting up my laptop to Samsung TV is giving 'no signal' message. It says check connected device's power, cable connection, and source selection. Any help gratefully received!
a b D Laptop
April 19, 2013 12:24:19 PM

have you set the laptop to either external display or both internal and external display--not just internal

and set your tv to hdmi 1 or whichever hdmi port if your tv has more than one
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April 19, 2013 2:37:31 PM

mcnumpty23 said:
have you set the laptop to either external display or both internal and external display--not just internal

and set your tv to hdmi 1 or whichever hdmi port if your tv has more than one


Hi - think i should be called mcnumpty, but can you tell me how to set the laptop to external display? Sorry, am bit of a technophobe.....thankyou!
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a b D Laptop
April 19, 2013 7:41:33 PM

either in the bios--set it to both internal and external

so you see display on laptop and tv at same time

or theres normally a toggle key you can use in windows

usually the fn + f5 or fn + f4 keys

the correct f key will have a little monitor icon on it

think on my ibm you pressed fn + f5 but different makers may use f4 etc

press the keys to toggle through internal--internal and external--external only
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April 20, 2013 4:02:54 AM

Fantastic!! Many thanks....
Control Panel
Windows mobility centre
External Display
Bob's your uncle
xxxx
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September 18, 2013 4:02:45 PM

pooki23 said:
Brand new hdmi cable connecting up my laptop to Samsung TV is giving 'no signal' message. It says check connected device's power, cable connection, and source selection. Any help gratefully received!


"no signal check connected devices power cable connection and source selection"

I just had this same error. After some online and telephone tech support that went nowhere, I found a post of a guy saying he fixed it; all he did was unplug his cable box from the power.

To fix the error with my TV (PC, Blu-Ray Player, and PS3, all hooked up with HDMI recieving the same error), this is what I did:

1.Power on TV and Blu-Ray Player (or any other HDMI connected device _should_ work).
2. Make sure it's all on, TV set to recieve signal from whatever input (mine was set to HDMI1)
3. Rip both devices from the power, or switch off the power plug. Yes, turn them all off at the same time in the worst way possible.
4. Plug them back in/turn your power bar back on
5. Watch some crazy wizard magic happen.


I think it was some sort of problem in the mechanism where the HDMI devices were authenticating/handshaking.

The forced reset caused a disaster that the TV was forced to reset everything for on a hardware level.


TV doesn't work? Rip it from the power while it's still on. Plug it in again, and BAM! WIzard magic.

I had the LN55c70 LED 3D TV, everything was working except the HDMI inputs (VGA, USB, all worked).
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September 20, 2013 6:26:47 AM

I had the LN55c70 LED 3D TV, everything was working except the HDMI inputs
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November 4, 2013 4:39:12 AM

I tried your fix and it worked right away! Thanks so much!
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January 29, 2014 5:41:56 PM

This worked for my late-model Samsung TV too! Too bad their tech support doesn't know about it!
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February 26, 2014 6:19:40 AM

Holy cow! Outsmarting technology. Your solution indeed worked some mystical magic! Thank you :bounce: 
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!